Sasl libraries aren't present in the native packages for Solaris SPARC.
(jboss-ewp-native-5.0.1.CR1.solaris10-sparc64.zip, jboss-ewp-native-5.0.1.CR1.solaris9-sparc.zip, jboss-ewp-native-5.0.1.CR1.solaris9-sparc64.zip)

This issue was already present in EAP 5.0.1, for more details see comments for JBPAPP-3883. In released natives for EAP 5.0.1 is everything right.